Grey Wars: Super Tower Defense

Build up turrets to stop the invading aliens!
Developed by: Wyvern Studios • Classic (Flash)
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ALIENS HAVE LANDED AND THEY ARE AFTER OUR COWS! Build up turrets to stop the the little grey men from getting to their destination. If they aren't stopped it may mean the END OF THE HUMAN RACE!

Instructions
Mouse - Navigate
Number Keys - Turret quick keys
Space bar - Airstrike
"W" key - Quick upgrades
"R" key - Replace a turret
"S" key - Sell a turret